SIOCORE 0.6x High Definition (HD) PROFESSIONAL Weitwinkelkonverter (58mm direct connection thread) for example, Canon EOS 10D, 20D, 20Da, 30D, 40D, 50D, 60D, 60Da, 300D, 350D, 400D, 450D, 500D, 550D, 600D, 650D, 1000D, 1100D, 1D, 1D C, X 1D, 1Ds, 1D Mark II, 1Ds Mark II, 1D Mark II N, 1Ds Mark III, 1Ds Mark III, 5D, 5D Mark II, 5D Mark III, 7D, 1D X, etc. (electronics)
The converter is properly and recommended. The quality is absolutely superb. Compromising image quality I can not determine. Only the somewhat heavy weight, which is due to the quality, I noticed. But a lot of glass -> a lot of weight.